Sulfur Dioxide Sensor SO2 Sensor - SO2-BF
SO2-BF Sulfur Dioxide Sensor SO2 Sensor Description
Alphasense Sulfur Dioxide gas sensors operate using proven fuel cell technology.
SO2-BF Sulfur Dioxide Sensor size:
32mm diameter package, the best choice for fixed site applications
The SO2 range provides OEMs with reliable sensors for use in a variety of applications. Strong signal levels combined with low zero current allows resolution below 1ppm and an operating range for safety applications up to 2,000ppm. The sensors are designed for use in both fixed site and portable instrumentation.
The SO2 sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification.
| SO2-BF Sulfur Dioxide Sensor SO2 Sensor PERFORMANCE |
| Sensitivity | nA/ppm in 20ppm SO2 | 300 to 480 |
| Response time | t90 (s) from zero to 20ppm SO2 | < 40 |
| Zero current | ppm equivalent in zero air | < ±0.5 |
| Resolution | RMS noise (ppm equivalent) | < 0.1 |
| Range | ppm limit of performance warranty | 100 |
| Linearity | ppm error at full scale, linear at zero and 20ppm SO2 | < ±2 |
| Overgas limit | maximum ppm for stable response to gas pulse | 1000 |
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| SO2-BF Sulfur Dioxide Sensor SO2 Sensor LIFETIME |
| Zero drift | ppm equivalent change/year in lab air | < 0.1 |
| Sensitivity drift | % change/year in lab air, monthly test | < 4 |
| Operating life | months until 80% original signal (24 month warranted) | > 24 |
| | | |
| SO2-BF Sulfur Dioxide Sensor SO2 Sensor ENVIRONMENTAL |
| Sensitivity @ -20°C | % (output @ -20°C/output @ 20°C) @ 20ppm | 78 to 90 |
| Sensitivity @ 50°C | % (output @ 50°C/output @ 20°C) @ 20ppm | 100 to 120 |
| Zero @ -20°C | ppm equivalent change from 20°C | < 0 to 1 |
| Zero @ 50°C | ppm equivalent change from 20°C | < 0 to 2 |
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| SO2-BF Sulfur Dioxide Sensor SO2 Sensor CROSS SENSITIVITY |
| Filter capacity | ppm·hrs | 450 |
| H2S sensitivity | % measured gas @ 20ppm H2S | < 2 |
| NO2 sensitivity | % measured gas @ 10ppm NO2 | < -120 |
| Cl2 sensitivity | % measured gas @ 10ppm Cl2 | < -50 |
| NO sensitivity | % measured gas @ 50ppm NO | < -10 |
| CO sensitivity | % measured gas @ 400ppm CO | < 1.5 |
| H2 sensitivity | % measured gas @ 400ppm H2 | < 0.5 |
| C2H4 sensitivity | % measured gas @ 400ppm C2H4 | < 50 |
| NH3 sensitivity | % measured gas @ 20ppm NH3 | < 0.1 |
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| SO2-BF Sulfur Dioxide Sensor SO2 Sensor KEY SPECIFICATIONS |
| Temperature range | °C | -30 to 50 |
| Pressure range | kPa | 80 to 120 |
| Humidity range | % rh continuous (see note below) | 15 to 90 |
| Storage period | months @ 3 to 20°C (stored in sealed pot) | 6 |
| Load Resistor | Ω (recommended) | 10 to 47 |
| Weight | g | < 13 |
